But the teenager composed himself and struck a vital blow of his own on the stroke of tea.

With the final ball before the break, Cartwright played forward in defence to Mehedi as the ball skidded straight on, taking the right-hander’s outside edge and Soumya Sarkar at slip made no mistake to leave the visitors at 5-321 at tea.

Mehedi takes time to compose himself after the blow

While the dropped catch technically went down as a chance as it struck Mehedi on the full, the extraordinary power with which Cartwright struck the ball may have also left the Australian feeling let down that it didn't result in any runs.

Mehedi wasn't the only Bangladeshi to cop the wrath of Cartwright in his brief stay, with the right-hander pummelling a pull shot straight into Mominul Haque at short leg.

Tea wrap: Warner posts a century but Tigers strike

Mominul solidered on with minimal fuss, giving his upper thigh a brief rub before resuming his position at bat-pad.

Cartwright himself copped a nasty blow at short leg on Test debut earlier this year, struck square in the protector at the SCG.

Ouch! Cartwright cops a nasty one at short cover

Mehedi had earlier dropped Glenn Maxwell, also on 12, when he put down a simple chance in gully to leave quick Mustafizur Rahman dejected.

David Warner, who went on to post his 20th Test century on Wednesday, was also dropped on 52 by Mominul Haque, who couldn’t hold onto a difficult catch at short leg in the final session of day two.

Louis Cameron is a Melbourne-based journalist. A former Victorian Bushrangers fast bowler, Louis joined the cricket.com.au team with assistance from the Australian Cricketers' Association's Internship Program in 2016.